Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 525440
Title Cassaveselectie
Author(s) Koch, L.
Source University. Promotor(en): J.E. van der Stok. - Wageningen : Veenman - 71
Publication type Dissertation, internally prepared
Publication year 1934
Keyword(s) manihot esculenta - cassave - teelt - cultuurmethoden - nederlands indië - cassava - cultivation - cultural methods - netherlands east indies
Categories Cassave / Plant Products
Abstract Cassava is indigenous in South America, from where it was introduced to all tropical countries of the old world. It was introduced to Java in 1810; the planted area there and on Madura in 1934 far surpassed that of any other country in the world. Seedling selection has achieved important results only in Indo-China and the Netherlands East Indies.
Many trials on flowering and fertilization were carried out and have shown how to obtain seed of good provenance, how to germinate them and how to establish plantations with them. Thus techniques of selection had improved gradually. The important nutritive qualities of the roots were described, while external

influences on several of them were traced. The choice of parents influenced the behaviour of the seedlings, but this did not imply that a certain quality was transmitted from the parents to their offspring or to many of them. Many correlations demonstrated that generally no genetic objections could be raised to combining of desired qualities.

Hybrids between cassava and Manihot glaziovii gave 30 generally fast growing plants, of which a part could be crossed mutually and with both parents. Some directives were given for the future. The desirability was stressed of importing many cassava varieties and Manihot spp. from South America, for large-scale selection of hybrids in the Netherlands East Indies.
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